멤브레인형 LNGC의 공선항해중 탱크내 압력과 온도 시뮬레이터 개발

Development of the Pressure and Temperature Simulator for Membrane Type LNGC during the Ballast Voyage

In this paper, thermal calculation results are reported for the membrane type LNG carrier(LNGC) of 138,000㎥ class. Thermal calculation modes are divided into 6-modes based on the thermal boundary conditions. These modes are unsteady and steady state modes during the ballast voyage, cool-down mode, loading mode, unsteady and steady state modes during the laden voyage. Temperature distribution and stored energy in the insulation barrier are calculated numerically by the 3-dimensional analysis. Finally, the simulator for the temperature and the pressure variations in LNG tank is suggested in this paper. These simulation results will be contributed for the development of satellite ship management system(SSMS) to achieve the easy operation and the prevention of explosion accident.